HI everyone! It’s been awhile So I’ve had my betta for a little over a month now. When I first got him, his tail was perfectly round. After a little time, I noticed a rip in his tail, which I assumed was from decor I had, so I removed it. It started to get better and heal and now it looks like this! It doesn’t look like fin rot, and the ends seem to have curled. What is this from? There are silk plants, almond leaves, and a moss ball in his tank, so I know it’s not from rough decor. Maybe tail biting?